TY - JOUR
T1 - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C
AU - Ma, Jian
AU - Hu, Rui
AU - Chang, Hui
AU - Bai, Guanghai
AU - Liu, Jun
AU - Zhou, Lian
PY - 2012/3
Y1 - 2012/3
N2 - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr 2O 3, NiO and (Ni, Co, Mn, Cr) 3O 4, which is of M 3O 4 type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr 2O 3 scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr 2O 3 scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.
AB - Evolution of oxidation scale for a Ni-22Cr-20Co-18W alloy at 1100°C was investigated by means of XRD and SEM (EDS). The results show that at the initial stage of the oxidation, a oxide scale of the mixture of Cr 2O 3, NiO and (Ni, Co, Mn, Cr) 3O 4, which is of M 3O 4 type, is formed on the surface. The single-layer oxide film changes into double layer one after long time oxidation, the sequential Cr 2O 3 scale forms at the inner layer, and the outer NiO scale could effectively retard the volatilization of the inner Cr 2O 3 scale; the voids are formed at the scale/alloy interface and inner oxidation of Al element is observed at the same time.
KW - Constant temperature oxidation
KW - Ni-22Cr-20Co-18W superalloy
KW - Oxide scale
KW - Void
UR - http://www.scopus.com/inward/record.url?scp=84860339281&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:84860339281
SN - 1002-185X
VL - 41
SP - 486
EP - 489
JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
IS - 3
ER -